MariaDB 10.3支持update多表ORDER BY and LIMIT
1）update连表更新，limit语句
update t1 join t2 on t1.id=t2.id set t1.name='hechunyang' limit 3;
MySQL 8.0 直接报错
MariaDB 10.3 更新成功
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2）update连表更新，ORDER BY and LIMIT语句
update t1 join t2 on t1.id=t2.id set t1.name='HEchunyang' order by t1.id DESC limit 3;
MySQL 8.0 直接报错
MariaDB 10.3 更新成功
参考：https://jira.mariadb.org/browse/MDEV-13911
